期刊
ADVANCED ENERGY MATERIALS
卷 6, 期 3, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201501661
关键词
electrocatalysts; hydrogen evolution reactions; nanotubes; nanosheets; oxygen evolution reactions
类别
资金
- National Key Basic Research Program of China [2013CB934104]
- Natural Science Foundation of China [21322311, 21473038, 21471034]
- Science and Technology Commission of Shanghai Municipality [14JC1490500]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
- Collaborative Innovation Center of Chemistry for Energy Materials
- Deanship of Scientific Research at King Saud University [PRG-1436-14]
One promising approach to hydrogen energy utilization from full water splitting relies on the successful development of earth-abundant, efficient, and stable electrocatalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). Here, homologous Co-Ni-based nanotube/nanosheet structures with tunable Co/Ni ratios, including hydroxides and nitrides, are grown on conductive substrates by a cation-exchanging method to grow hydroxides, followed by anion exchanging to obtain corresponding nitrides. These hydroxide OER catalysts and nitride HER catalysts exhibit low overpotentials, small Tafel slopes, and high current densities, which are attributed to their large electrochemically reactive surface, 1D morphologies for charge conduction, and octahedral coordination states of metal ions for efficient catalytic activities. The homologous Co-Ni-based nanotube hydroxides and nitrides suggest promising electrocatalysts for full water splitting with high efficiency, good stability, convenient fabrication, and low cost.
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